Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c5094e24bdeb03c…

MALICIOUS

PDF

72.2 KB Created: 2021-03-02 19:41:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 02b241a2dd5a42904300a54a84fcd80b SHA-1: 9c4bcb2d1051b0261b919273320b7b69847844f2 SHA-256: 1c5094e24bdeb03c5bcfe7ec55f5426e382c507000b4598ef09522de8457f8e1
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely to deliver a secondary payload or phish for information. The document body, though heavily obfuscated, appears to be a lure related to a product search, reinforcing the phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://nipisod.ru/wb?keyword=ar%20blue%20clean%20ar383ss%20canada PDF link annotation
    • http://befigter.xyz/oraciones_first_conditional0dlaz.pdfIn PDF document text
    • http://fumizudo.sportsontheweb.net/sujuwupivofaneralefo.pdfIn PDF document text
    • http://zozegakipuvi.iblogger.org/derebajidikomerasulolef.pdfIn PDF document text
    • http://wapajojakazewi.iblogger.org/wink_bingo_app.pdfIn PDF document text
    • http://zanovekolasin.mywebcommunity.org/nazm_hikmet_iiri_en_gzel_deniz.pdfIn PDF document text
    • http://ejinaya.com/gugeradizudofibvljrf.pdfIn PDF document text
    • http://tefitagesev.mypressonline.com/kobinerisasomepo.pdfIn PDF document text
    • http://regse.website/rapunobxyqqi.pdfIn PDF document text
    • http://dududuw.mypressonline.com/12419757401.pdfIn PDF document text
    • http://edayafar.xyz/1411041587586x06.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/vojapu/vetilokokikiwigo.pdfIn PDF document text
    • https://s3.amazonaws.com/datarofapakil/broadcast_receiver_android_o.pdfIn PDF document text
    • https://s3.amazonaws.com/dukexajuj/zelda_breath_of_the_wild_guide_shrines.pdfIn PDF document text
    • https://s3.amazonaws.com/tasufagijaremo/67583347479.pdfIn PDF document text
    • https://s3.amazonaws.com/faduxodiwo/laxawemefibagiwireruf.pdfIn PDF document text
    • https://s3.amazonaws.com/bomupi/59411972804.pdfIn PDF document text
    • https://s3.amazonaws.com/mamibis/789465146.pdfIn PDF document text
    • https://s3.amazonaws.com/pibabopuduj/spotify_songs_to_computer.pdfIn PDF document text
    • https://s3.amazonaws.com/juwofuxufijup/sefopofozo.pdfIn PDF document text
    • https://s3.amazonaws.com/wovigebi/worksheets_for_writing_activities_for_grade_1.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE44 5064 bytes
SHA-256: ec36e498a034f6796683a0a7e67ff8936e17dfc12ca2375ad0b4d5a79b91f4b4
font_01_sfnt_off0000df67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF67 10936 bytes
SHA-256: 435839f2fca5c8d0f4c3975650d7f7187d0230b84c21801df960db6363a16508
font_02_sfnt_off00010424.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10424 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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